Siva Kumar

Lead Full Stack Engineer (Individual Contributor) specializing in AI infrastructure and LLM platforms, with 9 years of overall engineering experience. Took complete end-to-end ownership of TokenSight — an enterprise AI gateway for LLM token observability, cost optimization, and usage analytics at CloudAngles — owning everything from HLD/LLD system design to implementation using FastAPI, ClickHouse, Redis, OpenTelemetry, and Presidio, achieving 60–70% token cost optimization in production. Brings a strong React/TypeScript foundation (microfrontend architecture, Webpack Module Federation) to the frontend of every platform built, so systems are owned from the data pipeline to the dashboard.

Also runs DevGnan, a developer training program.

Lead Full Stack Engineer — AI Infrastructure & LLM Platforms at CloudAngles (2025-07 – Present)

Took complete end-to-end ownership of TokenSight — an enterprise AI gateway for LLM token observability, cost optimization, and usage analytics — from HLD/LLD system design through to production, as an individual contributor, using FastAPI, ClickHouse, Redis, OpenTelemetry, and Presidio

• Owned the High-Level Design (service boundaries, data flow between gateway, cache, and analytics store) and Low-Level Design (API contracts, schema design, async execution model) for the entire platform
• Designed the streaming request pipeline for real-time token tracking, resolving blocking issues with an async / run_in_executor pattern
• Achieved 60–70% token cost optimization across LLM calls in production, through a four-stage execution plan with quality gates anchored to cost-per-successful-task as the north-star metric
• Architected the React + Next.js frontend for TokenSight's observability dashboards, and containerized the full stack with Docker Compose for reliable local/CI environments

Senior Software Engineer – React & Frontend at GlobalLogic (2023-06 – 2025-07)

• Developed and maintained large-scale React.js + TypeScript applications for enterprise clients — complex state management using Redux Toolkit and Redux Saga
• Implemented microfrontend patterns with Webpack for independent module deployments — improved team autonomy and deployment velocity
• Leveraged Webpack bundle optimization: code splitting, tree shaking, lazy loading — measurably reduced load times across production apps
• Collaborated with cross-functional teams (product, UX, backend) to deliver high-quality, production-ready React applications in Agile/Scrum
• Led code reviews and architectural discussions — maintained high standards for component design, reusability, and test coverage

MERN Stack Developer – React & Node.js at Altimetrik (2021-01 – 2023-06)

• Built complex React + Redux applications for fintech clients handling ₹500Cr+ in daily transactions — PCI-DSS compliant, high-availability flows
• Migrated legacy jQuery codebase to React — improved developer velocity 3x and reduced bug count by 40%
• Integrated Razorpay, Stripe, and PayU payment gateways; implemented real-time WebSocket dashboards using React + Socket.io

React Developer at Infinite Computer Solutions (2020-10 – 2021-12)

• Built Forex trading UI single-handedly from scratch using React + Redux for web and Vue + Weex for cross-platform mobile
• Developed reusable React component libraries and custom hooks adopted across multiple internal projects — saving 200+ dev hours

Senior React Developer at i2Nexus Technologies (2020-03 – 2020-10)

• Collaborated with CX team to enhance onboarding flow — drove conversion rate increase from 4% to 10.6%
• Designed the Khabri customer tracking service (Mixpanel integration) and a jiffy loading model that measurably improved performance

MERN Stack Developer at Pegasystems (2019-06 – 2020-02)

• Developed full-stack MERN applications with TypeScript, delivering scalable web features in an enterprise environment
• Contributed to sprint planning, code reviews, and technical estimations in Agile workflows

Frontend Developer – React & Angular at Knowledge Lens (2018-08 – 2019-06)

• Built dynamic React SPAs and responsive UIs using HTML5, CSS3/SCSS, and JavaScript — cross-browser compatible
• Developed D3.js data visualization components for analytics dashboards; integrated RESTful APIs with WCAG-compliant performance

Bachelor of Technology in Computer Science – Sree Krishnadevaraya University, Ananthapur (2011 – 2015)